Struct EngineConfig 

pub struct EngineConfig {
    pub name: String,
    pub model: String,
    pub default: bool,
    pub fusion_weight: Option<f64>,
    pub dims: Option<u32>,
}

Configuration for a single embedding engine.

Fields

name: String

Logical name used to reference this engine in logs and fusion.

model: String

Lattice-embed model name (e.g. "all-minilm-l6-v2").

Must be parseable via lattice_embed::EmbeddingModel::from_str (or a recognised short alias handled by parse_embedding_model_alias).

default: bool

When true, this engine’s model becomes the primary (RuntimeConfig::embedding_model). Exactly one engine in the list must set this. If absent, defaults to false.

fusion_weight: Option<f64>

Reserved RRF fusion weight for future weighted multi-engine fusion.

Current retrieval does not consume this field. Config loading rejects any explicit value rather than silently treating it as applied. Leave it unset until per-engine weighted fusion is implemented. The loader still distinguishes invalid (non-finite or non-positive) values from valid but unsupported ones.

dims: Option<u32>

Expected output dimensionality (optional sanity check).

Not used at runtime — dimensions are authoritative from EmbeddingModel::dimensions(). Present so operators can document the expected shape alongside the model name.

Trait Implementations

impl Clone for EngineConfig

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EngineConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EngineConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.